Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:

Options:

a

b

c

d

Correct Answer:

a

Explanation:

$ P = \frac{Nhc}{\lambda}$

P is same for both source.

$\Rightarrow \frac{N_1}{N_2} = \frac{\lambda_1}{\lambda_2} = \frac{1nm}{500 nm} = \frac{1}{500}$